GridView Default(IEnumerable <object> items)
{
var control = new GridView
{
Size = new Size(300, 100),
DataStore = items
};
LogEvents(control);
var dropDown = MyDropDown("DropDownKey");
control.Columns.Add(new GridColumn {
DataCell = new CheckBoxCell("Check"), Editable = true, AutoSize = true, Resizable = false
});
control.Columns.Add(new GridColumn {
HeaderText = "Image", DataCell = new ImageViewCell("Image")
});
control.Columns.Add(new GridColumn {
HeaderText = "Text", DataCell = new TextBoxCell("Text"), Editable = true, Sortable = true
});
control.Columns.Add(new GridColumn {
HeaderText = "Drop Down", DataCell = dropDown, Editable = true, Sortable = true
});
if (Platform.Supports <DrawableCell>())
{
var drawableCell = new DrawableCell();
drawableCell.Paint += (sender, e) =>
{
var m = e.Item as MyGridItem;
if (m != null)
{
if (e.CellState.HasFlag(DrawableCellStates.Selected))
{
e.Graphics.FillRectangle(Colors.Blue, e.ClipRectangle);
}
else
{
e.Graphics.FillRectangle(Brushes.Cached(m.Color), e.ClipRectangle);
}
var rect = e.ClipRectangle;
rect.Inflate(-5, -5);
e.Graphics.DrawRectangle(Colors.White, rect);
e.Graphics.DrawLine(Colors.White, rect.Left, rect.Bottom, rect.MiddleX, rect.Top);
e.Graphics.DrawLine(Colors.White, rect.Right, rect.Bottom, rect.MiddleX, rect.Top);
}
};
control.Columns.Add(new GridColumn
{
HeaderText = "Owner drawn",
DataCell = drawableCell
});
}
return(control);
}
GridView Default(bool addItems = true)
{
var control = new GridView
{
Size = new Size(300, 100)
};
LogEvents(control);
var dropDown = MyDropDown("DropDownKey");
control.Columns.Add(new GridColumn {
DataCell = new CheckBoxCell("Check"), Editable = true, AutoSize = true, Resizable = false
});
control.Columns.Add(new GridColumn {
HeaderText = "Image", DataCell = new ImageViewCell("Image")
});
control.Columns.Add(new GridColumn {
HeaderText = "Text", DataCell = new TextBoxCell("Text"), Editable = true, Sortable = true
});
control.Columns.Add(new GridColumn {
HeaderText = "Drop Down", DataCell = dropDown, Editable = true, Sortable = true
});
#if Windows // Drawable cells - need to implement on other platforms.
var drawableCell = new DrawableCell
{
PaintHandler = args => {
var m = args.Item as MyGridItem;
if (m != null)
{
args.Graphics.FillRectangle(Brushes.Cached(m.Color) as SolidBrush, args.CellBounds);
}
}
};
control.Columns.Add(new GridColumn {
HeaderText = "Owner drawn", DataCell = drawableCell
});
#endif
if (addItems)
{
var items = new DataStoreCollection();
var rand = new Random();
for (int i = 0; i < 10000; i++)
{
items.Add(new MyGridItem(rand, i, dropDown));
}
control.DataStore = items;
}
return(control);
}
protected sealed override void OnPaint(PaintEventArgs e)
{
if (EnableDoubleBuffering)
{
var screen = ParentWindow.Screen;
var scale = screen.RealScale / screen.Scale;
renderSize = Size.Round(e.ClipRectangle.Size * scale);
if (bitmap == null ||
bitmap.Size.Width < renderSize.Width ||
bitmap.Size.Height < renderSize.Height)
{
if (bitmap != null)
{
bitmap.Dispose();
}
bitmap = new Bitmap(renderSize, PixelFormat.Format32bppRgba);
}
var bitmapGraphics = new Graphics(bitmap);
bitmapGraphics.Clear(Brushes.Cached(BackgroundColor));
bitmapGraphics.ScaleTransform(scale);
bitmapGraphics.TranslateTransform(-e.ClipRectangle.Location);
bitmapGraphics.SetClip(e.ClipRectangle * scale); // should be affected by transform
var childArgs = new PaintEventArgs(bitmapGraphics, e.ClipRectangle);
base.OnPaint(childArgs);
OnBufferedPaint(childArgs);
bitmapGraphics.Dispose();
bitmapGraphics = null;
e.Graphics.DrawImage(bitmap, new RectangleF(renderSize), e.ClipRectangle);
if (Platform.IsWpf)
{
// wpf runs out of resources fast here, so we garbage collect
GC.Collect();
}
}
else
{
base.OnPaint(e);
OnBufferedPaint(e);
}
}
Control DrawImageToRect()
{
var image64 = new Bitmap(new Size(64, 64), PixelFormat.Format32bppRgba);
var image32 = new Bitmap(new Size(32, 32), PixelFormat.Format32bppRgba);
using (var g = new Graphics(image64))
g.Clear(Brushes.Cached(Colors.Green) as SolidBrush);
using (var g = new Graphics(image32))
g.Clear(Brushes.Cached(Colors.Blue) as SolidBrush);
var bitmap = new Bitmap(new Size(105, 105), PixelFormat.Format32bppRgba);
using (var g = new Graphics(bitmap))
{
// draw the big image at the origin, but with a smaller dest rect
g.DrawImage(image64, new RectangleF(0, 0, 32, 32), new RectangleF(0, 0, 32, 32));
// draw two guide images to indicate how big the green image should be
g.DrawImage(image32, new PointF(70, 0));
g.DrawImage(image32, new PointF(0, 70));
}
return new DrawableImageView { Image = bitmap };
}
public Graphics BeginDraw(PaintEventArgs e)
{
if (UseOffScreenBitmap)
{
if (OffscreenBitmap == null ||
OffscreenBitmap.Size.Width < e.ClipRectangle.Width ||
OffscreenBitmap.Size.Height < e.ClipRectangle.Height)
{
if (OffscreenBitmap != null)
{
OffscreenBitmap.Dispose();
}
OffscreenBitmap = new Bitmap(Size.Round(e.ClipRectangle.Size), PixelFormat.Format32bppRgba);
}
bitmapGraphics = new Graphics(OffscreenBitmap);
bitmapGraphics.TranslateTransform(-e.ClipRectangle.Location);
bitmapGraphics.SetClip(e.ClipRectangle);
bitmapGraphics.Clear(Brushes.Cached(drawable.BackgroundColor));
return(bitmapGraphics);
}
return(e.Graphics);
}
GridView CreateGrid()
{
var control = new GridView
{
Size = new Size(300, 100)
};
LogEvents(control);
var dropDown = MyDropDown("DropDownKey");
control.Columns.Add(new GridColumn {
DataCell = new CheckBoxCell("Check"), AutoSize = true, Resizable = false
});
control.Columns.Add(new GridColumn {
HeaderText = "Image", DataCell = new ImageViewCell("Image"), Resizable = false
});
control.Columns.Add(new GridColumn {
HeaderText = "ImageText", DataCell = new ImageTextCell("Image", "Text")
});
control.Columns.Add(new GridColumn {
HeaderText = "Text", DataCell = new TextBoxCell("Text"), Sortable = true
});
control.Columns.Add(new GridColumn {
HeaderText = "Progress", DataCell = new ProgressCell("Progress")
});
control.Columns.Add(new GridColumn {
HeaderText = "Drop Down", DataCell = dropDown, Sortable = true
});
if (Platform.Supports <CustomCell>())
{
//control.ReloadSelectedCells = true;
//control.SelectedRowsChanged += (sender, e) => control.ReloadData(control.SelectedRows);
var col = new GridColumn {
HeaderText = "Custom", Sortable = true, DataCell = new MyCustomCell()
};
control.Columns.Add(col);
}
if (Platform.Supports <DrawableCell>())
{
var drawableCell = new DrawableCell();
drawableCell.Paint += (sender, e) =>
{
var m = e.Item as MyGridItem;
if (m != null)
{
if (e.CellState.HasFlag(CellStates.Selected))
{
e.Graphics.FillRectangle(Colors.Blue, e.ClipRectangle);
}
else
{
e.Graphics.FillRectangle(Brushes.Cached(m.Color), e.ClipRectangle);
}
var rect = e.ClipRectangle;
rect.Inflate(-5, -5);
var color = e.CellState.HasFlag(CellStates.Editing) ? Colors.Black : Colors.White;
e.Graphics.DrawRectangle(color, rect);
e.Graphics.DrawLine(color, rect.Left, rect.Bottom, rect.MiddleX, rect.Top);
e.Graphics.DrawLine(color, rect.Right, rect.Bottom, rect.MiddleX, rect.Top);
}
};
control.Columns.Add(new GridColumn
{
HeaderText = "Owner drawn",
DataCell = drawableCell
});
}
return(control);
}
SearchBox CreateSearchBox(SelectableFilterCollection <MyGridItem> filtered)
{
var filterText = new SearchBox {
PlaceholderText = "Filter"
};
filterText.TextChanged += (s, e) =>
{
var filterItems = (filterText.Text ?? "").Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (filterItems.Length == 0)
{
filtered.Filter = null;
}
else
{
filtered.Filter = i =>
{
// Every item in the split filter string should be within the Text property
foreach (var filterItem in filterItems)
{
if (i.Text.IndexOf(filterItem, StringComparison.OrdinalIgnoreCase) == -1)
{
return(false);
}
}
return(true);
}
};
};
return(filterText);
}
GridView CreateGrid()
{
var control = new GridView
{
Size = new Size(300, 100)
};
LogEvents(control);
var dropDown = MyDropDown("DropDownKey");
control.Columns.Add(new GridColumn {
DataCell = new CheckBoxCell("Check"), AutoSize = true, Resizable = false
});
control.Columns.Add(new GridColumn {
HeaderText = "Image", DataCell = new ImageViewCell("Image")
});
control.Columns.Add(new GridColumn {
HeaderText = "ImageText", DataCell = new ImageTextCell("Image", "Text")
});
control.Columns.Add(new GridColumn {
HeaderText = "Text", DataCell = new TextBoxCell("Text"), Sortable = true
});
control.Columns.Add(new GridColumn {
HeaderText = "Progress", DataCell = new ProgressCell("Progress")
});
control.Columns.Add(new GridColumn {
HeaderText = "Drop Down", DataCell = dropDown, Sortable = true
});
if (Platform.Supports <DrawableCell>())
{
var drawableCell = new DrawableCell();
drawableCell.Paint += (sender, e) =>
{
var m = e.Item as MyGridItem;
if (m != null)
{
if (e.CellState.HasFlag(DrawableCellStates.Selected))
{
e.Graphics.FillRectangle(Colors.Blue, e.ClipRectangle);
}
else
{
e.Graphics.FillRectangle(Brushes.Cached(m.Color), e.ClipRectangle);
}
var rect = e.ClipRectangle;
rect.Inflate(-5, -5);
e.Graphics.DrawRectangle(Colors.White, rect);
e.Graphics.DrawLine(Colors.White, rect.Left, rect.Bottom, rect.MiddleX, rect.Top);
e.Graphics.DrawLine(Colors.White, rect.Right, rect.Bottom, rect.MiddleX, rect.Top);
}
};
control.Columns.Add(new GridColumn
{
HeaderText = "Owner drawn",
DataCell = drawableCell
});
}
return(control);
}
IEnumerable <MyGridItem> CreateItems()
{
var rand = new Random();
for (int i = 0; i < 10000; i++)
{
yield return(new MyGridItem(rand, i));
}
}
ContextMenu CreateContextMenu(GridView grid, SelectableFilterCollection <MyGridItem> filtered)
{
// Context menu
var menu = new ContextMenu();
var item = new ButtonMenuItem {
Text = "Click Me!"
};
item.Click += (sender, e) =>
{
if (grid.SelectedRows.Any())
{
Log.Write(item, "Click, Rows: {0}", SelectedRowsString(grid));
}
else
{
Log.Write(item, "Click, no item selected");
}
};
menu.Items.Add(item);
// Delete menu item: deletes the item from the store, the UI updates via the binding.
var deleteItem = new ButtonMenuItem {
Text = "Delete Item"
};
deleteItem.Click += (s, e) =>
{
var i = grid.SelectedItems.First() as MyGridItem;
if (i != null)
{
filtered.Remove(i);
}
};
menu.Items.Add(deleteItem);
// Insert item: inserts an item into the store, the UI updates via the binding.
var insertItem = new ButtonMenuItem {
Text = "Insert Item at the start of the list"
};
insertItem.Click += (s, e) =>
{
var i = grid.SelectedItems.First() as MyGridItem;
if (i != null)
{
filtered.Insert(0, new MyGridItem(new Random(), 0));
}
};
menu.Items.Add(insertItem);
var subMenu = menu.Items.GetSubmenu("Sub Menu");
item = new ButtonMenuItem {
Text = "Item 5"
};
item.Click += (s, e) => Log.Write(item, "Clicked");
subMenu.Items.Add(item);
item = new ButtonMenuItem {
Text = "Item 6"
};
item.Click += (s, e) => Log.Write(item, "Clicked");
subMenu.Items.Add(item);
return(menu);
}
private sd.Brush GetBrush(Color color)
{
return((sd.Brush)Brushes.Cached(color, this.Generator).ControlObject);
}
